I'll bite. I work in education. Android is definitely moving a lot faster than W8. Probably the biggest thing is Google itself, with its free online cloud storage (drive) and word processing program. Free is a big attraction to a lot of schools. I work for private schools internationally, and budget concerns are always an issue. Not only that, but the ease of acquiring the technology matters because sometimes its hard to do overseas. With Google it is all right there. Of course it helps that kids like new. They see MS as old. Google is a newer and hipper.
For myself, I want an Asus dual boot Windows 8.1 and Android. That would be extremely awesome.
Windows still has its place though. No one wants to use Chrome and Powerpoint is still better than the competition. Windows is also helped ironically, by free programs like Apache Open Office which is still better than Google's online word program, and it doesn't require an internet connection.